• Vitamins

    Do you know? how Vitamin B12 is beneficial for your body

    Vitamin B12 There are several related chemical structures consisting of a corrin nucleus surrounding a cobalt atom which show vitamin B12 activity. Collectively they can be described as the cobalamins.Theyare not found inplants and the sole natural source are microorganisms. The active compounds in mammals are hydroxycobalamin, methylcobalamin and adenosylcobalamin. Most of the normal human intake is derived from animal sources and strict vegans need to be supplemented with cyanocobalamin. The absorption of the colabamins from the terminal ileum requires binding to a salivary haptocarrin and subsequently to a glycoprotein of molecular weight about 50000 secreted by gastric parietal cells (the so-called intrinsic factor). Deficiency states in the human are…

  • Vitamins

    The naturally occurring form is vitamin D3 (cholecalciferol)

    Naturally occurring form vitamin D3 The naturally occurring form is vitamin D3 (cholecalciferol) which is formed in the skin by the action of ultraviolet (VV) irradiation on 7-de hydrocholesterol. However, ergocaleiferol (vitamin D 2), which is derived from UV irradiation of ergosterol in plants, is a food additive, is consumed from the food and can be used by the body as an altemative to vitamin D3. When there is adequate exposure of the skin to sunlight, oral intake of ergosterol is unnecessary, indeed it may lead to toxic manifestations. It comes into its own when sunlight is scarce or the skin is heavily shrouded, as for example in certain ethnic…